#include <stdio.h>

int max(int x , int y)
{
    int z;
    z = x > y ? x:y;
    return(z);
}
int main()
{
    int max(int x , int y);
    int a , b , c;
    printf("please enter two integer numbers:");
    scanf("%d,%d",&a,&b);
    c=max(a,b);
    printf("max is %d\n",c);
    return 0;

}